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I have ET with Jak2 mutation, my lymphocyte count has risen from 2.7 to 4.2 over 3 months, is this normal, my platlets are 599

December 30, 2025
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Is it normal for lymphocyte counts to rise from 2.7 to 4.2 over 3 months with ET and JAK2 mutation?

Essential thrombocythemia can cause changes in white blood cell counts, including lymphocytes. While ET primarily affects platelet production, it can impact other blood cell types as well.

Your platelet count of 599 is Show Full Answer

Is it normal for lymphocyte counts to rise from 2.7 to 4.2 over 3 months with ET and JAK2 mutation?

Essential thrombocythemia can cause changes in white blood cell counts, including lymphocytes. While ET primarily affects platelet production, it can impact other blood cell types as well.

Your platelet count of 599 is elevated, which is typical for ET. The lymphocyte increase you're experiencing could be related to your MPN, but it's important to discuss this with your hematologist.

They'll want to:
- Review your complete blood count trends
- Rule out other causes like infections or inflammation
- Assess whether your current treatment needs adjustment
- Monitor for any progression of your condition

Since ET can sometimes progress or show changes in blood cell patterns over time, regular monitoring is essential. Your doctor can determine if this rise is within expected variation or if it requires further investigation.

Don't hesitate to reach out to your healthcare team about these changes - they're best positioned to interpret your results in the context of your overall health picture.

December 30, 2025

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